https://developers.facebook.com/docs/threads/create-posts/polls

{
"id": "1234567", // Threads Media ID
"poll_attachment": {
"option_a": "first option",
"option_b": "second option",
"option_c": "third option",
"option_d": "fourth option",
"option_a_votes_percentage": 0.10, // Percentage of votes for first option
"option_b_votes_percentage": 0.20,
"option_c_votes_percentage": 0.15,
"option_d_votes_percentage": 0.55,
"expiration_timestamp": "2025-01-01T23:00:00+0000" // Time when the poll expires
}
}